How does alert.$emit("test-name", this.options) work?

Question

Vue.js

I make changes to the project and see this code

selectLanguageOption(data) {
      if (data === 'interface') {
        alert.$emit('langChange', this.activeLang)
      }
    },

With my mind, I kind of understand that the "langChange" event is called from the parent and some data is being transmitted. Why via alert and there is no such event in the parent component.

Answer 1

The event is called directly on the alert, and what this alert is is not clear from this piece of code, but most likely it is not a parent